Holley Main Jets 54 #122-54 Flang10.9M8x20Z ILSAC GF-5

ILSAC GF-5

Somta 17mm Cobalt Std Slot Drill For general milling or slots and cavities

72 tooth mechanism for 5° increments

Cutting diameter: 6mm

Holley Main Jets 54 #122-54 Flang10.9M8x20Z ILSAC GF-5These metering orifices control fuel flow into the metering system. They are rated in flow capacity cubic centimeters per minute and are changeable for tuning purposes. The shape of the entry, exit, and size determines flow. All Holley Main Jets are flow tested and then stamped with the correct number. Standard Main Jet . 054" Jet size 1 4 32 Thread Sizes from 40 110 Fits All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500